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Names Anesthesiologist (US English)
Anaesthetist (British English)
Activity sectors medicine, science
Education required see professional requirements

An anesthesiologist (US English) or anaesthetist (British English) is a physician trained in anesthesia and perioperative medicine.

In the United States, anesthesiologists are physicians who complete an accredited residency program in anesthesiology, usually four years following medical school either with M.D. or D.O. degree.

In the United Kingdom, the term anaesthetist refers only to fully registered medical practitioners (university graduates in medicine) . In a very few UK hospitals some duties are performed by non-physicians, but only under close physician anesthetist supervision, but this has effectively ceased.

Role in healthcare delivery

Anesthesiologists (anaesthetists in the UK) are physicians who provide medical care to patients in a wide variety of (usually acute) situations. This includes a preoperative evaluation, consultation with the surgical team, creation of a plan for the anesthesia tailored to each individual patient, airway management, intraoperative life support and provision of pain control, intraoperative diagnostic stabilization, and proper post-operative management of patients. For anesthesiologists, Preparation of patients for emergency surgery are mandatory, essential, and critical skills that anesthesiologists have been trained to employ. Because anesthesiologists are physicians, in contrast to other anesthesia providers, they are able to utilize their extensive knowledge of human physiology and diseases to guide their decision making.

Historically there has been a shortage of anesthesiologists. In order to better serve the population, residency positions in anesthesiology for physicians have been steadily increasing the past several years. In addition, physicians supervise ACTs, or Anesthesia Care Teams, which are composed of a supervising physician with several certified registered nurse anesthetists (CRNAs) or anesthesiologist assistants (AAs). In other areas of the country , anesthesiologists work in what is deemed a "solo" or "MD/DO only" practice, during which they provide anesthesia in a "one on one" relationship with the patient.

A consultant anesthetist in the UK is a fully qualified doctor, who has spent at least 9 years (7 of which should be in anesthesia) after graduation as a trainee, and is appointed as a consultant. A trainee anesthetist in the UK is a fully qualified doctor on their way to become a consultant; they could be 2 years or even 10 years post graduation.

Anesthesiologists and patient-informed consent

Patient-informed consent is a fundamental ethical and legal principle and is considered essential to patient autonomy. The American Society of Anesthesiologists, the American Osteopathic College of Anesthesiologists, and other professional organizations, such as the American Association of Nurse Anesthetists, support the principle that patients should be fully informed regarding the manner in which their anesthetic will be administered.

Due to medications given before, during, and after surgery, a patient may sometimes not remember interacting with the anesthesiologist, nurse anesthetist, or anesthesiologist assistant involved in their anesthesia care. The anesthetic plan, as well as alternatives, risks, and benefits of the chosen anesthetic techniques, should be discussed with the patient prior to surgery. (This can be difficult or impossible in some situations, such as with unconscious patients, confused patients, or extremely urgent cases. It may be possible to discuss matters with a patient's relative or caretaker.)

Training by country

Physician training in anesthesiology in developed countries is similar.


In Argentina, anesthetists are physicians who have specialized in the medical field of anesthesia. Residency is 5 years long.

Australia and New Zealand

In Australia and New Zealand, anesthetists are physicians (with the degree of Bachelor of Medicine and Bachelor of Surgery i.e. MB ChB or MB BS) who have specialized in the medical field of anesthesia.

In Australia and New Zealand, anesthetists are represented by the Australian Society of Anaesthetists and the New Zealand Society of Anesthetists. Training is overseen by the Australian and New Zealand College of Anaesthetists. The ANZCA approved training sequence encompasses an initial two-year Pre-vocational Medical Education and Training (PMET) period and the five-year period of ANZCA Approved Training (two years Basic Training and three years Advanced Training).

In the course of Approved Training, Trainees are required to successfully complete:

- Five years of supervised clinical training at Approved Training Sites
- Both the Primary and Final Examinations which consist of both written (multiple choice questions and short answer questions) and, if successful at the written component, oral examinations
In the final examination, there are many stations of clinical scenarios (including interpretation of radiological exams, EKGs and other special investigations). There is also two stations of real patients with complex medical conditions - for clinical examination and a following discussion. - A program of 12 modules such as obstetric anesthesia, pediatric anesthesia, cardiothoracic and vascular anesthesia, neurosurgical anesthesia and pain management.
- Completion of an advanced project, such as a research publication or paper.
- An EMAC (Effective Management of Anesthetic Crises) or EMST (Early Management of Severe Trauma) course.

On completion of all Training Program requirements the Trainee will be awarded the Diploma of Fellowship and be entitled to use the qualification of FANZCA – Fellow of the Australian and New Zealand College of Anaesthetists.


In Canada anesthesiologists are physicians (with the degree MD - Medicinae Doctorem or MDCM - Medicinae Doctorem et Chirurgiae Magistrum) who have specialized in the medical field of anesthesiology.

Training is overseen by 16 universities approved by the Royal College of Physicians and Surgeons of Canada. Upon completion of a residency program, (typically 5 years) the candidate is required to pass a comprehensive objective examination consisting of a written component (two three-hour papers: one featuring 'multiple choice' questions, and the other featuring 'short-answer' questions) and an oral component (a two-hour session made up of stations on the clinical aspects of anesthesiology). The examination of a patient is not required.

Upon completion of all training requirements, the anesthesiology graduate is then entitled to become a "Fellow of the Royal College of Physicians of Canada" and to use the post-nominal letters "FRCPC".


After earning the right to practice medicine, German physicians who want to be an anesthetist have to go through a 5-year residency, ending with a board examination. During this time, physicians are educated in all aspects of their chosen field of medicine. Usually this includes rotations serving in the operating room to perform anesthesia on a variety of patients being treated by every kind of surgical sub-profession (i.e. general surgery, neurosurgery or invasive urological and gynecological procedures), followed by a rotation on various intensive-care and intermediate-care units. During this time of residency, many physicians choose to complete a course in emergency medicine, which once completed, enables them to be referred to as Notarzt, a physician of the Emergency Medical Service. This certification enables them to treat patients at home or on the scene of accidents, either on their own or assisted by paramedics.

The Netherlands

Anesthesiologists in The Netherlands must have completed medical school, which takes six years on average. After successfully completing medical school they start a five year residency training in anesthesiology. In their fifth year they can choose to spend the year doing research, or to specialize in a certain area, including regular anesthesia, critical care medicine, pain and palliative medicine, pediatric anesthesiology, cardiothoracic anesthesiology, neuro anesthesiology, obstetric anesthesiology.


To specialize in Anesthesiology in Guatemala, a student with a medical degree (he or she must have a Surgeon and General Medicine skills by law) completes a residency of six years (five years in residency and one year of practice with an expert anesthesiologist). After residency, students then go to a board examination overseen by the College Of Medicine of Guatemala, the Universidade De San Carlos De Guatemala (Medicine Faculty Examination Board), and a Chief Physician who represents the Healthcare Ministry Of The Government Of Guatemala. The examination includes a written section, an oral section, and a special examination of skills and knowledge in Anesthesia Instruments, Emergency Treatment, Pre-Operative Care, Post-Operative Care, ICU -Intensive Care Unit-, and pain medicine.

After passing the examination, the College Of Medicine Of Guatemala, Universidad De San Carlos De Guatemala and the Healthcare Ministry Of The Government Of Guatemala grants the new anesthesiologist a special license to practice anesthesiology as well as a Diploma issued by the Universidad De San Carlos De Guatemala granting the degree of Physician with specialization in anesthesiology. Anesthesiologists in Guatemala are also subject to yearly examinations and mandatory participation in a yearly seminary on the latest developments in anesthesiology.

Hong Kong

To be qualified as a specialist anaesthetist in Hong Kong, medical practitioners must undergo a minimum of six years of postgraduate training and pass three professional examinations. Upon completion of training, the Fellowship of Hong Kong College of Anesthesiologists and subsequently the Fellowship of Hong Kong Academy of Medicine would be awarded. Practicing specialist anesthetists are required to register in the Specialist Register of the Medical Council of Hong Kong and hence are under the regulation of the Medical Council. [1]


In Italy, the Anesthesiologist-Intensive Care is a doctor who, after graduation from Medical School (6.5 years), has completed a residency of 4 years (5 years starting in 2008). They can work in Operating Rooms, ICUs, PACUs, Pain Units, Hyperbaric Units and Emergency Departments.


In Denmark, Finland, Iceland, Norway, and Sweden, anesthesiologist training is overseen by the respective national societies of anaesthesiology as well as the Scandinavian Society of Anesthesiology and Intensive Care Medicine (SSAI). In Scandinavia, anesthesiology is the medical specialty that is engaged in the fields anaesthesia, intensive care medicine, pain medicine, and pre- and in-hospital emergency medicine.

Anesthesiologist in the Scandinavian countries are doctors who have completed a six-year undergraduate training program (from Medical School), a twelve-month internship, and a five-year residency program. SSAI currently hosts five training programs for anesthesiologists in Scandinavia. These are Intensive Care, Pediatric Anesthesia and Intensive Care, Advanced Pain Medicine, Critical Care Medicine, Advanced Obstetric Anesthesia.

United Kingdom

In England, Northern Ireland, Scotland, and Wales, training is overseen by the Royal College of Anaesthetists. Anaesthetists in the United Kingdom are doctors who have completed either a five-year or six-year undergraduate training program or a four-year program open only to open to post graduates.

Following the completion of medical school, doctors enter the two-year Foundation Program which consists of at least six, four-month rotations in various medical specialties. It is mandatory for all doctors to complete a minimum of three months of general medical and general surgical training in this time.

Following the Foundation Programe, doctors compete for specialist training in anaesthetics. The training program in the United Kingdom currently consists of two years of Core Training and five years of Higher Training. Trainees wishing to hold dual accreditation in Anaesthetics and Intensive Care Medicine may enter anesthesia training via the Acute Care Common Stem (ACCS) program which lasts three years and consists of experience in anesthesia, emergency medicine, acute medicine and intensive care. Trainees in anaesthesia are called Specialty Registrars (StR) or Specialist Registrars (SpR).

Before the end of Core Training, all anesthetic trainees must have passed the primary examination of the diploma of Fellowship of the Royal College of Anaesthetists (FRCA). The final part of the examination is taken as a higher trainee (usually in the fourth year of training). The FRCA examination is notorious for its difficulty and is said to be the most difficult of all post-graduate medical examinations. The examination covers physics, pharmacology, physiology, anatomy, clinical sciences, pathology, respiratory medicine, emergency medicine, critical care and pain medicine.

The CCT (Certificate of Completion of Training) program in anesthetics is divided into three levels: basic, intermediate and advanced. During this time, doctors experience anesthesia as applicable to all surgical specialties. The curriculum focuses on a modular format, with trainees primarily working in one specialist area during the module, for example: cardiac anesthesia, neuroanesthesia, ENT, maxillofacial, pain medicine, intensive care, trauma.

Traditionally (before the advent of the Foundation Programme) trainees have entered anaesthetics from other specialties, such as medicine or accident and emergency. Specialist training then takes at least seven years.

On completion of specialist training, doctors are awarded the Certificate of Completion of Training (CCT) and are eligible for entry on the GMC Specialist Register and are able to work as Consultant Anaesthetists. A new consultant in anesthetics will have completed a minimum of 14 years of training (including: five to six years of medical school; two years of foundation training; and seven years of anesthesia training). It is this level of training that confers the credibility to a CCT holder, referred to as a Consultant in the NHS, and is respected throughout the World.

Those wishing for dual accredit in intensive care are required to undertake an additional year of training and normally complete the Diploma in Intensive Care Medicine (DICM). Pain specialists sit the Fellowship of the Faculty of Pain Medicine of the Royal College of Anaesthetists (FFPMRCA) examination.

United States

Anesthesiologists are the most extensively trained anesthesia providers in the United States. Anesthesiologists are physicians (M.D. or D.O.) who have chosen to specialize in anesthesiology. Anesthesiologists in the United States must have completed an undergraduate college degree (that includes pre-medical requirements) and, like all other physicians, four years of medical school. Anesthesiology residency programs in the United States, without exception, require successful completion of four years of residency training for board certification eligibility in the specialty of anesthesiology. An anesthesiology residency requires a one year medical or surgical internship followed by three years of anesthesiology training. Anesthesiology residents face multiple examinations during their second, third, and fourth years of residency, including exams encompassing physiology, pathophysiology, pharmacology, and other medical sciences addressed in medical school, along with multiple anesthesia knowledge tests which assess progress during residency. Successful completion of a board exam after completion of residency is required for board certification.

Anesthesiology residency training in the U.S. encompasses the full scope of perioperative medicine, including pre-operative medical evaluation, management of pre-existing disease in the surgical patient, intraoperative life support, intraoperative pain control, post-operative recovery, intensive care medicine, and chronic and acute pain management. After residency, many anesthesiologists complete an additional fellowship year of subspecialty training in areas such as pain management, sleep medicine, cardiothoracic anesthesiology, pediatric anesthesiology, neuro anesthesiology, regional anesthesiology/ambulatory anesthesiology, obstetric anesthesiology or critical care medicine.

The majority of anesthesiologists in the United States are board-certified by a specialty medical board; either the American Board of Anesthesiology (ABA) or the American Osteopathic Board of Anesthesiology (AOBA). It should be noted that D.O. anesthesiologists can be certified by the ABA. The ABA is a member of the American Board of Medical Specialties, while the AOBA falls under the auspices of the American Osteopathic Association. Both Boards are recognized by the major insurance underwriters in the U.S. as well as by all branches of the U.S. Uniformed Services. Board certification by the ABA involves both a written and an oral examination. AOBA certification requires the same exams, in addition to a practical examination with examining physicians observing the applicant actually administering anesthetics in the operating room. Anesthesiologists in the U.S. make at maximum $600,000 a year with $400 per hour.

See also


External links

  • DMOZ
  • International Anesthesia Research Society)


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